Physics Calculators
35 calculatorsExplore the fundamental laws of nature with calculators for motion, energy, forces, waves, electricity, and thermodynamics.
35 calculators available
Mechanics(16)↑ top
Acceleration Calculator
Calculate acceleration from initial velocity, final velocity…
Centripetal Force Calculator
Calculate centripetal force, velocity, or radius for circula…
Engine Horsepower Calculator
Compute engine horsepower from torque and RPM in seconds. Wo…
Force Calculator
Calculate force, mass, or acceleration using Newton's second…
Friction Calculator
Calculate friction force using F_f = μN. Enter the coefficie…
Gravitational Force Calculator
Calculate the gravitational force between two masses using N…
Hooke's Law Calculator
Calculate the force exerted by a spring using Hooke's Law: F…
Horsepower Calculator
Convert torque and RPM to horsepower in seconds. Works for c…
Kinetic & Potential Energy Calculator
Calculate kinetic, gravitational potential, and elastic pote…
Moment of Inertia Calculator
Calculate moment of inertia for solid cylinders, hoops, sphe…
Momentum Calculator
Calculate the linear momentum of an object using p = mv. Ent…
Projectile Motion Calculator
Calculate range, maximum height, time of flight, and impact …
Terminal Velocity Calculator
Find terminal velocity from mass, drag coefficient, frontal …
Torque Calculator
Calculate torque, force, or moment arm using the torque equa…
Velocity Calculator
Find velocity from distance and time, or solve for final vel…
Work Calculator
Calculate work done by a force using W = Fd cosθ. Enter forc…
Electricity & Magnetism(5)↑ top
Battery Life Calculator
Estimate how long a battery lasts under a given load, or fin…
Capacitor Calculator
Decode EIA capacitor codes into capacitance, convert values …
Ohms Law Calculator
Solve for voltage, current, resistance, or power using Ohm's…
Resistor Calculator
Decode 4, 5, and 6-band resistor color codes into ohms, tole…
Voltage Drop Calculator
Calculate voltage drop for copper or aluminum wire in single…
Audio(1)↑ top
Properties of Matter(2)↑ top
Waves & Optics(5)↑ top
Doppler Effect Calculator
Doppler effect for sound and light: observed frequency, pitc…
Lens Equation Calculator
Solve the thin lens equation for image distance, focal lengt…
Snell's Law Calculator
Apply Snell's law to find the refraction angle, the critical…
Wave Speed Calculator
Calculate wave speed, frequency, or wavelength with v = f-la…
Wavelength Calculator
Calculate the wavelength of a wave from its speed and freque…
Electricity & Circuits(1)↑ top
Relativity(1)↑ top
Astrophysics(2)↑ top
Fluid Mechanics(1)↑ top
Thermodynamics(1)↑ top
Frequently Asked Questions
- ❓ What is kinetic energy?
- ✅ Kinetic energy is the energy an object possesses due to its motion, calculated as KE = 1/2 m v², where m is mass and v is velocity. It increases with the square of speed.
- ❓ How do I calculate force?
- ✅ Force equals mass times acceleration (F = m a), Newton's second law. It is measured in newtons (N), where 1 N = 1 kg·m/s².
- ❓ What is the difference between speed and velocity?
- ✅ Speed is a scalar quantity (how fast), while velocity is a vector that also includes direction. An object moving in a circle at constant speed has changing velocity.